By studying structural principle of BYL PQ valve, its work principle is introduced in Chapter 2.Chapter 3 analyzes the static performance of BYL PQ valve by building its static model, and studies the disturbing ingredient that affects the static performance of PQ valve.
第三章通过建立PQ阀的稳态数学模型,分析研究了PQ阀内部结构参数和液压参数对其稳态特性的影响趋势。
High concentration of oxygen and high temperature inhibited photosynthesis by 43.26% and 43.25% respectively. In the contrast, low level of oxygen stimulated photosynthesis. As oxygen concentration decreased by 1%, the photosynthesis rate increased byl.
低氧促进光合作用,氧浓度每下降1%,光合强度平均提高1.41%,高温下光合下降量为43.26%±34.44%。
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